IEC 61347-2-4:2000 pdf download-Lamp controlgear – Part 2-4: Particular requirements for d.c. supplied electronic ballasts for general lighting.
7 Marking 7.1 Mandatory markings In accordance with the requirements of 7.2 of IEC 61347-1, ballasts shall be clearly and durably marked with the following mandatory markings: – items a), b), e), f), k) and l) of 7.1 of IEC 61347-1, together with – the open-circuit voltage (for warning only, not to be tested). 7.2 Information to be provided, if applicable In addition to the above mandatory markings, the following information, if applicable, shall be given either on the ballast, or be made available in the manufacturer’s catalogue or similar: – items h), j), n) and i) of 7.1 of IEC 61347-1, together with – whether the ballast is proof against supply voltage polarity; – design voltage; – that the ballast is for general use only. 8 Protection against accidental contact with live parts The requirements of clause 10 of IEC 61347-1 apply. 9 Terminals The requirements of clause 8 of IEC 61347-1 apply. 10 Provisions for earthing The requirements of clause 9 of IEC 61347-1 apply. 11 Moisture resistance and insulation The requirements of clause 11 of IEC 61347-1 apply, with the exception of the 7 MΩ insulation resistance requirement for reinforced insulation. 12 Electric strength The requirements of clause 12 of IEC 61347-1 apply. 13 Thermal endurance test for windings The requirements of clause 13 of IEC 61347-1 are not applicable.
15 Abnormal conditions Ballasts shall not impair safety when operated under abnormal conditions at the maximum value of their rated voltage range. Compliance is checked by the tests of 15.1 to 15.3. 15.1 Removal of lamp(s) During operation of the ballast at the maximum value of its rated voltage range and in association with an appropriate lamp(s), the lamp(s) shall be disconnected for 1 h from the ballast without switching off the supply voltage. 15.2 Lamp fails to start (cathodes intact electrically) With a resistor in place of each lamp cathode, the ballast shall be operated at the maximum value of its rated voltage range for 1 h.